Slider for slide fastener and method for manufacturing same

Abstract

A slide fastener slider includes a slider body in which an upper blade and a lower blade are connected to each other, a pull tab, and a string attachment structure. The slider body includes a pull tab attachment portion formed on the upper blade, the pull tab attachment portion includes a pair of left and right first members protruding from an upper surface of the upper blade and a second member configured to connect the pair of left and right first members, and a pull tab insertion path is provided between the second member and the upper blade. At least a part of the pull tab is provided with a string-like member. The string-like member of the pull tab and the string attachment structure are disposed in the pull tab insertion path.

1 . A slide fastener slider comprising a slider body in which an upper blade and a lower blade are connected to each other, a pull tab, and a string attachment structure, wherein
 the slider body includes a pull tab attachment portion formed on the upper blade, the pull tab attachment portion includes a pair of left and right first members protruding from an upper surface of the upper blade and a second member configured to connect the pair of left and right first members, and a pull tab insertion path is provided between the second member and the upper blade,   at least a part of the pull tab is provided with a string-like member, and   the string-like member of the pull tab and the string attachment structure are disposed in the pull tab insertion path.   
     
     
         2 . The slide fastener slider according to  claim 1 , wherein
 the string-like member of the pull tab includes a string folded portion, the string folded portion is located below an upper surface of the second member, and a pair of the string-like members extending from the string folded portion is attached to the slider body to pass through the pull tab insertion path.   
     
     
         3 . The slide fastener slider according to  claim 2 , wherein
 the string attachment structure includes a right recessed groove and a left recessed groove, and the pair of string-like members extending from the string folded portion passes between the pair of left and right recessed grooves and the pair of left and right first members.   
     
     
         4 . The slide fastener slider according to  claim 1 , wherein
 the string attachment structure includes a right internal passage defined by a right wall which is planar and a central separation wall, and a left internal passage defined by a left wall and the central separation wall, and the string-like member passes through the left and right internal passages.   
     
     
         5 . The slide fastener slider according to any one of  claims 1 , wherein
 the string attachment structure includes a front raised portion and a rear raised portion on an upper surface thereof, and the second member is disposed between the front raised portion and the rear raised portion.   
     
     
         6 . The slide fastener slider according to  claim 5 , wherein
 a front side edge and a rear side edge of the second member of the pull tab attachment portion of the slider body have a curvilinear shape, and edge portions of the front raised portion and the rear raised portion of the string attachment structure have a curved surface shape corresponding to the curvilinear shape of the second member.   
     
     
         7 . The slide fastener slider according to any one of  claims 1 , wherein
 the string attachment structure includes a cover member on an upper surface thereof, and the second member of the pull tab attachment portion is accommodated between the cover member and a central body portion of the string attachment structure.   
     
     
         8 . The slide fastener slider according to  claims 1 , wherein
 a front surface of the string attachment structure is an inclined surface.   
     
     
         9 . The slide fastener slider according to any one of  claims 1 , wherein
 the string attachment structure is provided with a rear recess penetrating in a left-right direction on a rear surface thereof.   
     
     
         10 . The slide fastener slider according to  claims 1 , wherein
 the string attachment structure includes an offset recess, and a string folded portion of the string-like member is disposed in a string storage space formed by the offset recess.   
     
     
         11 . The slide fastener slider according to any one of  claims 1 , wherein
 the string attachment structure is integrally formed with the slider body.   
     
     
         12 . A manufacturing method of a slide fastener slider, the manufacturing method comprising:
 a step of disposing a string folded portion of a string-like member of a pull tab in a pull tab insertion path surrounded by an upper blade of a slider body, a pair of left and right first members protruding from an upper surface of the upper blade, and a second member connecting the pair of left and right first members;   a step of disposing a string attachment structure between a pair of the string- like members extending from the string folded portion ; and   a step of moving the string attachment structure and the string-like member toward the pull tab insertion path, pushing the string attachment structure into the pull tab insertion path against a frictional force to be generated between the string attachment structure and an inner surface of the pull tab insertion path, and fixing the string attachment structure and the string-like member to the slider body.   
     
     
         13 . The manufacturing method of the slide fastener slider according to  claim 12 , wherein
 in the step of fixing the string attachment structure and the string-like member to the slider body, a rear raised portion provided on the string attachment structure is removed from the pull tab insertion path, so that the second member is fixed to be sandwiched between a front raised portion and the rear raised portion provided on the string attachment structure.